Paper machine



B. A. MALKIN PAPER momma Aug. 9, 1938.

Filed Sept. 30, 1936 3 Sheets-Sheet l I NVENTUR.

BER MAR EA.

ATTORNEY Aug. 9, 1938.

B. A. MALKIN 2,126,486

PAPER MACHINE Filed Sept. 50, 1936 3 Sheets-Sheet 2 AT TURN EY Aug. 9, 1938.

B. A. MALKlN PAPER MACHINE Filed Sept. 50, 1936 3 Sheets-Sheet 3 111 IHH H I N VEN T 0 B BERNARD.A.MALKlN ATTORNEY Patented Aug. 9, 1938 l UNITED STATES PATENT OEHQE PAPER MACHINE Bernard A. Malliin, Lachine, Quebec, Canada, assignor to Dominion Engineering Works Limited, Lachine, Quebec, Canada Application September 30, 1936, Serial No. 103,375 lin Canada June 6, 1936 6 Claims. (Cl. 74421) This invention relates to improvements in paper with idler gears 23 contained in the lower casings machine dryers of the kind disclosed in my prior 9. The idler gears 23 mesh with the previously Patent No. 1,730,082, granted Oct. 1, 1929. mentioned idler gears it to complete the drive The dryer cylinders disclosed in the above patconnection between the spindle gears of the upper cut are driven by a train of spur gears enclosed and lower dryer cylinders. 5 by casings formed integral with the gear side of The upper dryer felt 25 passes over the upper the dryer frame. The gears attached directly to dryer cylinders l2 and under the idler rolls 25 the spindles of the dryer cylinders are located which are journalled in bearing brackets 27 outside the bearings in which the spindles are fastened to the frame structure 5. The lower journalled, said bearings being attached to and dryer felt 28 passes under the lower dryer cyl- 10 supported by the inner portion of the gear side of inders l8 and over the lower idler rolls 29. The the dryer frame. lower idler rolls 29 are journalled in bearings 30 The object of the present invention is to promounted on supporting shelves 3% formed integral vide an improved arrangement whereby the spin with the frame structure 5 as shown to advantage dle gears and bearings may be housed in the gear in Figs. 2 and 3. 15 side of the dryer frame in such manner that the The bearings and gears 22 associated With bearings may be inspected or removed without the spindles ll of the lower dryer cylinders are not disturbing the gears or vice versa. To this end shown in detail since they are constructed and the invention consists in arranging the spindle mounted in exactly the same manner as the bear- 20 gears and hearings in the gear side of the dryer ings l3 and gears is associated with the spindles frame so that the bearings lie outside the gears l! of the upper dryer cylinders l2. and may be readily removed from the spindle As shown more particularly in Figs. 2 and 3 without disturbing the gears. The gears are made the gears 5 are made in two sections comprising in SBC 'IS co p s a i g section carrying the a ring section |5a and a spider or hub section 5 gear teeth and a spider or hub section by means Mb. The ring section l5a carries the gear teeth 25 of which the ring sections are mounted on the I50 and is spigoted onto the spider ltb as indispindle. The ring sections of the gears are procated at lfid, being secured in place by the bolts vided with central openings of sufilcient diameter We. The spider or hub section ltib is fixed to the to permit these sections to .be drawn outwardly spindle H between the bearing is and the rear 3r over the spindle bearings without disturbing the wall 50, of the casing 6. The bearing l3 assolatter. ciated with each spindle ll comprises suitable Proceeding now to a more detailed description anti-friction bearing members 32 arranged within reference Wil be had to t e a p y n d aW- a cylindrical housing 33 provided with end 010- ings, in which sures 34 and 35 which are centrally apertured for 35 Fig. 1 is a view, in side elevation, of a portion the passage of the spindle therethrough. The 35 of the gear side of a dryer constructed in accordcylindrical housing 33 is fitted in an opening 36 ance with this invention. formed in the cover it and is provided with a Fig. 2 is a sectional View along the line 22 of flange 3? which. is bolted to the inner side of the Fig. 1. cover as indicated at 33. The diameter of the 40 Fig. 8 is a sectional view along the line 3-3 of flange 3'! is slightly less than the diameter of the 40 Fig. 1. central opening of the ring section Mia of the As shown in these drawings, the gear side 5 of spindle gear t5. the dryer frame is of hollow construction designed When it is desired to remove one of the bearto provide a plurality of interconnected casings ings it the end closure 34 of the bearing housing including upper casings 5, intermediate casings I, 33 is removed to permit removal of the clamping 45 and lower casings B and 9. The spindles ll of the nut 40 by which the anti-friction members 32 are upper dryer cylinders 12 are journalled in antisecured in place on the spindle H. The remain friction bearings it which are mounted in the ing elements of the spindle bearings may then be covers M of the upper casings 6. These spindles removed, as a unit with the cover M, by removing 5O carry gears l5 meshing with idler gears it 0011- the cover fastening bolts Me. It will thus be tained in the intermediate casings ll. seen that the bearing 53 associated with each The spindles ll of the lower dryer cylinders l8 spindle I I may be conveniently removed Without (see Fig. 1) are journalled in bearings 23 which disturbing the adjacent spindle gear l5. Obare mounted in the covers 2! of the lower casings viously the removal of the bearing I3 and the 55 9'. The spindles I! also carry gears 22 meshing cover I4 leaves the entire front side of the casing 55 6 open so that the Whole of the gear [5 is accessible for inspection or removal.

The toothed or ring section l5a of the gear l5 may also be removed from each of the spindles ll without disturbing the bearing l3. To accomplish this the cover fastening bolts Ma and the nuts 38a on the bolts 38 are removed to permit removal of the cover [4 without disturbing the bearing [3. The bolts l5e, fastening the ring sec.- tion l5a to the spider or hub section l5b are then removed and the ring section l5a drawn outwardly over the flange 3! of the bearing housing 33.

The bearings 20 and gears 22, associated with the spindles of the lower drying cylinders N, being constructed in the same manner as the gears and bearings associated with the upper drying cylinders l2, may be independently removed in exactly the same manner.

The front walls of the idler gear casings I are formed by removable covers 42 having their upper edges 43 butted against the lower edges M of the previously mentioned covers #4. The lower edges 45 of the covers 4.2 are similarly butted against the upper edges 46 of adjacent covers 4'! forming the outer side of the idler gear casings 9. The side edges 48 of the covers '31 are butted against the side edges 43 of the adjacent covers 2| forming the outer sides of the casings 8 in which the spindle bearings and gears of the lower dryer cylinders are housed.

Each idler gear 56 is fixed to a shaft 5! having one end journalled in a suitable anti-friction bearing 52 mounted in the cover 42 and the other end journalled in a similar bearing 53 mounted in the rear wall of the casing I. The outer menu bers 52a and 53a of the bearings 52 and 53 are fastened together by a bolt 54 passing centrally through the shaft 5i.

Each idler gear 23 is fixed to a shaft 56 having its ends journalled in suitable anti-friction bearings 51 and 58, the bearing 5'! being mounted in the cover 41 and the bearing 58 being mounted in the rear wall of the casing 9. A bolt 59 passing through the shaft 56 is fastened at its ends to the outer members 51a and 58a of the two bearings 51 and 58.

Removal of the bolts 54 and 559 permits disassembly and removal of the component parts of the bearings supporting the shafts of the idler gears I6 and 23. One of the idler gears 23, preferably the central gear shown in Fig. 1, is driven by a drive pinion 6i fixed to a drive shaft 62 journalled in suitable bearings 63.

Having thus described by invention, what I claim is:-

1. Spindle driving mechanism of the character described comprising a hollow frame structure, spindle bearings housed in said structure, spindles journalled in said bearings and gears fixed to said spindles so that said gears are housed in the hollow frame structure between the bearings and the inner side of said structure, each of said gears comprising detachably connected sections including a hub section fixed to one of said spindles and a toothed ring section detachably carried by the hub section, said ring section being removable through an opening in the outer side of said hollow structure when detached from the hub section and being provided with a central opening large enough to permit it to be drawn outwardly over the adjacent bearing without disturbing the latter.

2. Spindle driving mechanism of the character described comprising a hollow frame structure designed to provide a plurality of integrally connected gear casings, spindle bearings housed in certain of said gear casings, spin-dles journalled in said bearings, gears fixed to the spindles between the spindle bearings and the inner side of the hollow frame structure, each gear being housed in the gear casing containing the bearing of the spindle to which said gear is attached and additional gears housed in the remaining gear casings of the hollow frame structure to form a driving connection between the various spindle gears, said hollow structure being provided at its outer side with openings through which the bearing and gear associated with each spindle may be removed.

3. Spindle driving mechanism of the character described comprising a hollow frame structure designed to provide a plurality of integrally connected gear casings, spindle bearings housed in certain of said gear casings, spindles journalled in said bearings, gears fixed to the spindles between the spindle bearings and the inner side of the hollow structure, each gear being housed in the gear casing containing the bearing of the spindle to which said gear is attached and additional gears housed in the remaining gear casings to form a drive connection between the various spindle gears, each of the gear casings containing the spindle bearing being provided, at the outer side, with removable covers in which said bearings are mounted so as to be removable without disturbing the spindle gears, said covers being detachable from said bearing so as to be capable of independent removal.

4. A machine as set forth in claim 3 characterized in that each spindle gear comprises a hub section fixed to the spindle and a toothed ring section detachably fastened to the hub section, said ring section being removable through the outer side of its enclosing casing when the cover of said casing is detached and removed.

5. A spindle driving mechanism comprising a hollow frame member designed to provide a plurality of gear casings, spindle bearings housed in certain of said gear casings, spindles journalled in said bearings, a gear fixed to each spindie between the spindle bearing and the inner side of the casing containing said bearing, each of said gear casings being provided, at the outer side of the hollow frame structure, with a removable cover provided with a central opening in which the bearing associated with said casing is removably secured so that the cover may be removed with the bearing or independently thereof.

6. A spindle driving mechanism as set forth in claim 5 in which each spindle gear comprises a hub section fixed to the spindle and a toothed ring section detachably fastened to the hub section, the inside and outside diameter of the ring section being such as to permit removal of said section by drawing it outwardly over the adjacent spindle bearing when the cover of the casing is detached from the bearing and removed.

BERNARD A. MALKIN. 

